Create Rule5-43.md

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+# Envelope - Rule 5-43  
+
+**Rule ID:** 5-43  
+**Rule Description:** Automatic fenestration shading devices shall not be modeled in the Baseline.  
+**Rule Assertion:** Baseline RMD = expected value  
+**Appendix G Section:** Section G3.1-5(d) Building Envelope Modeling Requirements for the Baseline building  
+**Mandatory Rule:** True
+
+**Manual Check:** None  
+**Evaluation Context:** Each SubSurface  
+**Function Call:**  
+
+NONE
+
+## Applicability Check:  
+- look at each zone: `for zone in B_RMD...zones:`
+    - look at each surface: `for surface in zone.surfaces:`
+        - look at each subsurface: `for sub_surface in surface.subsurfaces: CONTINUE TO RULE LOGIC`
+
+            ## Rule Logic:  
+            - create a variable automatic_shades_modeled and set it to false: `automatic_shades_modeled = false`
+            - check whether the subsurface has the data element has_automatic_shades: `if sub_surface.has_automatic_shades != NULL:`
+                - set automatic_shades_modeled to sub_surface.has_atomatic_shades: `automatic_shades_modeled = sub_surface.has_automatic_shades`
+
+            **Rule Assertion:**
+            - Case 1: If the baseline subsurface does not have shading devices, then pass: `if not automatic_shades_modeled: PASS`
+            - Case 2: If the baseline subsurface has shading devices, then fail: `if automatic_shades_modeled: FAIL`
+
+
+**Notes:**
+
+
+**[Back](../_toc.md)**
+
+